Former Member

Dr. Jörg Willems

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Peer Reviewed Journal Publication
  • Willems, J. (2014, online: 2014) Robust Multilevel Methods for General Symmetric Positive Definite Operators. SIAM Journal on Numerical Analysis, Bd. 52 (1), S. 103-124 .
  • Willems, Joerg (2013, online: 2013) Robust Multilevel Solvers for High-Contrast Anisotropic Multiscale Problems. Journal of Computational and Applied Mathematics, Bd. 251, S. 47-60.
  • Willems, J. (2012) Robust Domain Decomposition Preconditioners for Abstract Symmetric Positive Definite Bilinear Forms. Mathematical Modelling and Numerical Analysis, Bd. -, S. 25.
  • Willems, J.; Efendiev, Y.; Galvis, J.; Lazarov, R. (2011, online: 2011) Variational multiscale finite element method for flows in highly porous media. Multiscale Model. Simul., Bd. 9, S. 1350-1372.
  • (2011, online: 2011) Variational Multiscale Finite Element Method for Flows in Highly Porous Media. SIAM Multiscale Modeling & Simulation, Bd. 9, S. 1350-1372. (link)
  • (2010) Fast numerical upscaling of heat equation for fibrous materials., Bd. 13 (6), S. 275-285.

Conference Contribution: Publication in Proceedings
  • Efendiev, Y.; Galvis, J.; Lazarov, R.; Willems, J. (2012) Robust Solvers for Symmetric Positive Definite Operators and Weighted Poincaré Inequalities.

Contribution in Collection
  • Willems, Jörg (2013) Spectral coarse spaces in robust two-level methods. In: Iliev, O.P.; Margenov, S.D.; Minev, P.D.; Vassilevski, P.S.; Zikatanov, L.T. (Hrsg.), Numerical Solution of Partial Differential Equations: Theory, Algorithms, and Their Applications, 1st. Aufl.: Springer, S. 303-326.

Research Report
  • Willems, J. (2012, online: 2012) Spectral Coarse Spaces in Robust Two-Level Methods. Bericht-Nr. 2012-20; Linz.
  • Willems, J. (2012, online: 2012) Robust Multilevel Solvers for High-Contrast Anisotropic Multiscale Problems. Bericht-Nr. 2012-17; Linz.
  • Willems, J. (2012, online: 2012) Robust Multilevel Methods for General Symmetric Positive Definite Operators. Bericht-Nr. 2012-06; Linz.